需求:点击按钮,下载user数据表中的所有数据到excel中
1.pom坐标
<!-- POI-->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.11</version>
</dependency>
2.controller代码(下载excel)
String filename=new String("客户表.xlsx".getBytes(),"ISO-8859-1"); response.setHeader("Content-Disposition", "attachment;filename="+filename); ServletOutputStream sos = response.getOutputStream(); HSSFWorkbook book=new HSSFWorkbook(); HSSFSheet sheet = book.createSheet(); Workbook wb = new SXSSFWorkbook(100); HSSFRow titlerow = sheet.createRow(0); //设置标题 titlerow.createCell(0).setCellValue("编号"); titlerow.createCell(1).setCellValue("公司名称"); titlerow.createCell(2).setCellValue("姓名"); titlerow.createCell(3).setCellValue("部门"); titlerow.createCell(4).setCellValue("email"); titlerow.createCell(5).setCellValue("邮政编码"); titlerow.createCell(6).setCellValue("地址"); titlerow.createCell(7).setCellValue("次行业"); List<User> list = $userService().getAll(); for(int i=0;i<list.size();i++){ User user = list.get(i); HSSFRow datarow = sheet.createRow(i+1); datarow.createCell(0).setCellValue(user.getId()); datarow.createCell(1).setCellValue(user.getCompanyName()); datarow.createCell(2).setCellValue(user.getName()); datarow.createCell(3).setCellValue(user.getDept()); datarow.createCell(4).setCellValue(user.getEmaill()); datarow.createCell(5).setCellValue(user.getPostalcode()); datarow.createCell(6).setCellValue(user.getAddress()); datarow.createCell(7).setCellValue(user.getSecondIndustry()); } book.write(sos); } catch(Exception e){ e.printStackTrace(); }3.前端写一个界面,点击访问此类即可